What’s Vulnerable › Vulnerabilities

CVE-2016-4437: Apache Shiro Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 93.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-06-07 · updated 2026-06-17
• Weakness: CWE-321

Description

Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.

Affected products

• Apache Software Foundation Apache Aurora: from 0.10.0 before 0.18.1 — fixed in 0.18.1
• Apache Software Foundation Apache Shiro: before 1.2.5 — fixed in 1.2.5
• Red Hat Fuse: 1.0
• RedHat Jboss Middleware Text-Only Advisories: 1.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Aurora 0.18.1; Apache Software Foundation Apache Shiro 1.2.5. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html
• http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html
• http://rhn.redhat.com/errata/RHSA-2016-2035.html
• http://rhn.redhat.com/errata/RHSA-2016-2036.html
• http://www.securityfocus.com/archive/1/538570/100/0/threaded
• http://www.securityfocus.com/bid/91024
• https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E
• http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html
• http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html
• http://rhn.redhat.com/errata/RHSA-2016-2035.html
• http://rhn.redhat.com/errata/RHSA-2016-2036.html
• http://www.securityfocus.com/archive/1/538570/100/0/threaded

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